Four friends in middle school –Federico, Paula, Graciela and Fabián- decide to skip class and sneak into the school basement. However, the class’ gossiper and teacher’s pet, Miriam discovers them and threatens them. She tells them that she will rat them out if they don’t let her stay and be part of the adventure. As supposed to be a time of intimacy for the friends to play pranks and have fun amongst each other, but instead it turned into unveiling series of conflicts with jealousy, fear, hatred, and hidden crushes are exposed. Meanwhile, upstairs on the school’s surface, the teacher and principal discover five children are missing and warn their parents which brought upon another conflict of their own.